Expansion joint installing means



19361 I FISCHER mmz EXPANSION JOINT INSTALLING MEANS Filed Feb. 27, 1930Invezzi0 WaZZaw/G Else/L0 Patented Jan. 14, 1936 UNITED STATES PATENTOFFICE 3 Claims.

The present invention relates to expansion joint installing means, andparticularly pertains to a device for installing expansion joint stripsin a concrete paving structure to separate the concrete at spacedintervals into sections.

Generally described the invention comprises a clip or unit provided witha base and projecting rib for engaging with an expansion joint strip anda staking device, whereby said strip may be positioned in the pavingstructure prior to pouring of the concrete. For assembling the clips theexpansion joint is preferably perforated so that the rib may beprojected therethru with the base engaging one face of the strip aboutthe margin of the perforation. A perforation is formed in the projectingrib of the clip and thru this perforation a staking means is adapted tobe inserted and driven into the ground for supporting the strip. Anydesired number of these clips may be employed, and the perforations inthe strips may be so arranged as to permit laying a series of strips andend to end in the form of a continuous line.

In the drawing:

Figure 1 is a perspective view of expansion joint strips assembled withclips embodying the present invention;

Figure 2 is a view somewhat similar to Figure 1 with the clips removed;and

Figure 3 is a perspective view of a modified form of clip.

Referring particularly to the drawing, numeral 2 designates expansionjoint strips of any conventional constructions. These usually areprovided in sections of suitable lengths for convenient handling, andare laid end to end in a paving structure, transversely andlongitudinally, to divide the paving into sections. In these strips anynumber of perforations 3 may be formed to permit insertion of my noveland improved clip 4. Any or all of the perforations may be provided byrecessing both ends of the strips so that when they are laid end to end,the recessed portions together will form a recess for the clip. However,if the strips are of considerable length,

additional perforations are preferably provided intermediate the ends toprevent bending.

The clip is typified by a sheet metal blank bent in the form of atriangular rib 5 with the sides terminating in one or more base flanges6 which are adapted to engage the strip around the margin of theperforation. Vertical perforations I are provided, midway the ends ofthe clip, thru the sides of the rib to receive a staking means 8 in linewith the ends of the abutting strip. Thus positioned, the staking meansfunctions to hold the ends of the strips clamped to the base flanges ofthe clip.

Transverse perforations 9 may also be provided in the clips toaccommodate rods which are usually laid transversely to reenforce theconcrete.

Figure 3 shows a modified form of clip wherein the rib I0 is squared inconformation. Otherwise it is of the same construction as abovedescribed clip, having base flanges 6 vertical perforation "l andtransverse perforation 9 Altho I have described particular modificationsembodying my invention it will be understood that there may be variouschanges in detail without departing from the spirit of the in vention.

I claim:

1. An expansion joint installing device comprising a loosely mountedclip embodying a blank having a pair of base flanges for engaging anexpansion joint strip, and a triangular ribbed portion connecting thebase flanges and perforated to receive a staking means.

2. An expansion joint installing device comprising a metal looselymounted clip embodying a blank having a pair of base flanges forengaging an expansion joint strip, and a triangular ribbed portionconnecting the base flanges and perforated to receive a staking means.

3. A center strip device comprising in combination a center strip boardhaving an opening therein, and a supporting bracket therefor having anapertured portion projecting through said opening for the reception ofdowel bars and retaining pins at substantially right angles with respectto one another.

WALLACE C. FISCHER.

